研究のタイプ: 医学/生物学の研究 (experimental study)

[鼻粘膜および鼻皮膚に対する超低周波磁界および携帯電話ばく露の影響] med./bio.

Effect of extremely low frequency magnetic field and mobile phone exposure on nasal mucosa and nose skin.

掲載誌: Biotechnol Biotechnol Equip 2011; 25 (1): 2273-2278

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研究目的(著者による)

To investigate the effects of exposure to a radiofrequency electromagnetic field and to an extremely low frequency magnetic field on the nasal mucosa and nose skin of rats.

詳細情報

Two experiments were performed. In the first experiment, Wistar rats were exposed (n=14) to a radiofrequency electromagnetic field similar to that emitted from GSM mobile phones or sham exposed (n=7). In the second experiment, Sprague-Dawley rats were exposed to an extremely low frequency magnetic field with a magnetic flux density of 100 µT (n=10) or 500 µT (n=10) or sham exposed (n=10).

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 900 MHz
ばく露時間: continuous for 2 h/day, 7 days/week for 10 months
ばく露2: 50 Hz
ばく露時間: continuous for 2 h/day, 7 days/week for 10 months

ばく露1

主たる特性
周波数 900 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 2 h/day, 7 days/week for 10 months
ばく露装置
ばく露の発生源/構造
  • GSM simulator
Distance between exposed object and exposure source 0.6 cm
ばく露装置の詳細 rats placed so in a plexiglas carousel that the heads pointed towards the antenna; antenna positioned in the center of the carousel
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
電力 2 W - - - -

ばく露2

主たる特性
周波数 50 Hz
タイプ
  • magnetic field
偏波
  • linear
ばく露時間 continuous for 2 h/day, 7 days/week for 10 months
Additional information oriented vertically
ばく露装置
ばく露の発生源/構造
ばく露装置の詳細 pair of Helmholtz coils with a diameter of 25 cm and 225 turns of 1.0 mm diameter insulated soft copper wire, placed horizontally facing each other; rats kept in a methacrylate cage between the coils; animals could move freely inside the cage
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
磁束密度 100 µT - 測定値 - -
磁束密度 500 µT - 測定値 - -

ばく露を受けた生物:

方法 影響評価項目/測定パラメータ/方法

研究対象とした生物試料:
調査の時期:
  • ばく露後

研究の主なアウトカム(著者による)

In both experiments, no differences were observed between the exposed and the sham exposed rats.
The authors conclude that exposure to a radiofrequency electromagnetic field or to an extremely low frequency magnetic field has no influence on the morphology of the nasal mucosa and nose skin of rats.

研究の種別:

研究助成

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